// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once
#include <optional>
#include <vector>

namespace kumo::pollux::common::testutil {
    // Workaround for GCC to avoid matching optional(std::in_place_t, ...)
    struct OptionalEmptyT {
        template<typename T>
        operator std::optional<std::vector<T> >() const {
            return std::make_optional<std::vector<T> >({});
        }
    };

    inline constexpr OptionalEmptyT optionalEmpty;
} // namespace kumo::pollux::common::testutil
